Granted Patent
Utility
US 4,241,449 · App. 05/840,341
Memory saving all-channel digital television receiver
Inventor:
Akio Tanaka
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Oct 7, 1977
Inventor
Akio Tanaka
Assignee (at issue)
Zenith Radio Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.